Answer:
by providing an alternative pathway with a lower activation energy
Explanation:
Cataysts are the substances that neither consumed nor produced during a chemical reaction, but increase the rate of the reaction.
So, catalysts remain chemically unchnaged after the completion of the reaction.
For a reaction to occur, reactants molecule must collide and successful collisions lead to product formation.
A certain minimum amount of energy is required for successful collision. This minimum amounr of energy is called activation energy.
One way to increase speed of reaction is to provide energy to the reactants and other way to increase speed is to provide alternate pathway with lower activation energy.
Catalyst increases a rate of reaction by providing an alternate pathway with lower activation energy.
Therefore, the correct option is option b 'by providing an alternative pathway with a lower activation energy'
Answer:
The catalyst provides an alternate pathway with lower activation energy and has no effect on the amount of products formed at the end of the reaction.
Explanation:
A catalyst is a substance that provides an alternate pathway for a chemical reaction, increasing its rate without being used up in the reaction itself. Catalysts work by providing an alternate pathway to circumvent this. Catalyzed reactions typically have lower activation energies that require less energy to start. Catalysts only affect the rate of the reaction; they have no effect on the amount of products that are formed.
